Structural, optical and magnetic properties of Mn-doped CuO nanoparticles by coprecipitation method

• Published in: Materials science & engineering. B, Solid-state materials for advanced technology Solid-state materials for advanced technology, 2023-03, Vol.289, p.116254, Article 116254
• Main Authors: Mote, Vishwanath D., Lokhande, S.D., Kathwate, L.H., Awale, M.B., Sudake, Yuvraj
• Format: Article
• Language: English
• Subjects: CuO; Microstrain; Nanoparticles; Paramagnetic; Spintronics; X-ray diffraction
• ISSN: 0921-5107; 1873-4944
• DOI: 10.1016/j.mseb.2022.116254

[Display omitted] •Mn-doped CuO nanoparticles was developed by a novel coprecipitation technique.•Mn2+ions are successfully introduced into the CuO lattice.•The content of Mn plays a crucial role in the lattice parameters and optical properties.•The Mn-doped CuO sample shows maximum saturation magnetization.•Reduction of energy band gap with Mn content which plays an important role in the photovoltaic applications. Structural, optical, and magnetic properties of Mn-doped CuO nanoparticles with compositional formula Cu1-xMnxO (x = 0.00, 0.01, 0.02) were investigated. The monoclinic structure of CuO without a secondary phase has been confirmed by X-ray diffraction (XRD) analysis. The average crystallite size was determined by Debye-Scherer’s formula and found in the range of 8 nm to 14 nm. W-H analysis resulted in decreasing microstrain with an increase of Mn doping, indicating Mn incorporation in CuO host lattice. Scanning electron microscope (SEM) images indicate that the pure and Mn-doped CuO nanoparticles have spherical-like morphology. UV–vis spectroscopy measurements revealed absorbance edge as a function of Mn doping. X-ray photoelectronic spectroscopy (XPS) study indicates that both Cu and Mn ions have 2+ valences in the samples. The magnetic hysteresis loops of the nanoparticles showed paramagnetic behavior at room temperature.